Author Naomi Wolf has been accused of being ‘disrespectful’ after suggesting footage of hostages being beheaded by ISIS militants isn’t real.

The 51-year-old American writer made a series of controversial statements questioning the authenticity of the footage in a number of messages on her Facebook page.

The initial post in which the feminist activist questions where the terror group are ‘getting all these folks from’ was deleted.

In another post, she also said that the Obama administration was sending troops to West Africa to confront the Ebola outbreak so they could return with the deadly infection – justifying a military takeover of Africa.

Social media users quickly rounded on her with some suggesting her theories were ‘crazy’ while others said her views were ‘harmful’ and had disrespected the victims’ families.

A video released on Friday appeared to show British hostage Alan Henning being beheaded by Jihadi John.